Pressure-controlling device.



J. W. BARTON.

PRESSURE CONTROLLING DEVICE.

APPLICATION FILED AUG- 7. 1 915.

Patented Sept. 12, 1916.

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JOHN w. BARTON", or JACKSONVILLE, FLORIDA, assrqivon or own-HALF To HENRY Ii. PEBRYMAN, or JAGKSQNVILLE, FLORIDA.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed August 7, 1915. Serial No. 44,319.

To all whom it may concern:

Be it known that I, JOHN W. BARTON, a citizen of the United States, residing at Jacksonville, in the county of Duval and State of Florida, have invented certain new and useful Improvements in Pressure-Controlling Devices, of which the following is a specification, reference being had therein to the accompanying drawing;

This invention relates to a device for controlling the fiow of gas to the burner of a steam boiler or the like, and, while the de- .YlCQ is especially designed for use in connection with the steam generator of a vulcanizing outfit, it will be understood that it is capable of use with analogous devices, regardless of thefuse to which they may be put, and that other .fluids than steam may be utilized. 7

The object of the invention is to provide a controlling device which will automatically regulate the flow of. gas according to the steam pressure in the generator.

To this end it is a further object of the invention to provide a device which will be subjected to and actuated by pressure of the steam, and to connect with this device the movable member of a cut-off, thereby causing the cut-off to be opened to an extent corresponding to the pressure of the steam in the generator.

It is a further object of the invention to provide such a device which will be simple in its construction and operation, and which can be manufactured and applied at a low cost.

The accompanying drawing is a sectional view taken vertically through a controlling device constructed in accordance with my invention.

In this drawing I have illustrated one embodiment of my invention and have shown the same as designed for application to the steam generator of a vulcanizing outfit. As here shown, it comprises a gas-tight casing or housing 1 which is interposed in the gas pipe between the burner for the steam generator and the source of gas supply. In the present arrangement the housing is connected by an apertured boss 2 with that side of the gas pipe which leads to the source of supply and which constitutes the inlet pipe for the controlling device. The other side of the housing is connected by an apertured boss 3 with the pipe leading to the burner,

which pipe constitutes the outlet pipe for the controllingdevice. Obviously, the character and positions of these inlet and outlet openings are susceptible to wide variations Mounted within the housing is a cut-off which comprises a movable member, here shown the form of a tube 4, which is movably connected with one side of the gas pipe. In the present instance this movable member of the cut-0E is connected with the outlet pipe, and to this end the tube 4 is shown in the form of an elbow, the horizontal portion of which is connected by a flexible tube 5 w th a nipple 6 communicating with the outlet pipe. It will be noticed that the parts 4 and 5 are detachable and the user of the de vice is thereby enabled to use tubes and flexible connections, such as shown at 5, of various diameters, thereby enabling the capacity of the device to be changed if desired. This connection is such that the controlling member or tube 4 can have free movement within the housing. The cut-ofi' further comprises a seat 7 arranged to 'cooperate with the tube l to control the flow of gas through; the latter. To this end it is arranged in longitudinal alinement with the tube and is held normally in a fixed position relatively thereto, and, obviously, as the tube is moved toward and away from the seat the space between the two parts will be decreased or increased, and the amount of gas which can enter the tube will vary accordingly. The arrangement is such that by imparting longitudinal movement to the tube the flow of gas can be either cut off completely or allowed to continue,without restriction, at the full capacity of the tube 4. The seat may be of any suitable character, but as here shown it is cup-shaped and is providedwith a leather liner 8. Preferably, the seat is adjustable, and, to this end, it is shown as swiveled on the inner end of an adjusting screw 9 which is screw-threaded into the wall of the housing 1 and is provided with a hand wheel 10 arranged outside of the housing, whereby the rotation of the screw will move the seat toward or away from the movable member or tube 4. In order that the movable member or tube 4: of the cut-off may be moved toward its seat as the steam pressure increases, I have mounted within the housing a curved tubular actuating member 11, of resilient material, which is substantially similar to the controlling spring of the steam gage. This tubular member has one end rigidly secured to the wall of the casing, and in open communication with a steam pipe 12 leading to the generator. The opposite end of the tubular member is closed and is connected with the movable member or tube 4: of the cut-off, otherwise this closed end of the tubular member is free to move. The device as shown in the drawing is in its normal position. l/Vhen fluid under pressure is admitted to the hollow actuating member 11 the tendency is to straighten it out, thus imparting movement to the closed or free end thereof. The amount of this movement corresponds to the pressure of the fluid within the actuating member. This movement of the actuating member moves the movable member or tube 4: of the cut-off toward its seat and thus diminishes the size of the opening through which the gas may pass to the burner. As the member l must move more or less in the arc of a circle as it approaches the seat 7 it is necessary to swivel the said seat to its stem or screw 9. By this arrangement when the member 4 comes in contact with its seat the engagement will be at right angles and a perfect closure will result, the seat being free to accommodate itself to the change of position necessary. As the steam pressure falls the resiliency of the tube returns the same toward its normal position, thus moving the tube it away from its seat and increasing the flow of gas to the burner. By adjusting the position of the seat the degree of temperature at which the flow of gas will be entirely out ofl can be varied.

The operation of the device will be readily understood from the foregoing description, and it will be apparent that I have produced a controlling device which will automatically maintain a uniform pressure of steam in the generator and, when applied to a vulcanizing device, will effectually prevent the under-curing or over-curing of the rubher because of improper steam pressures. Further, it will be apparent that the device is very simple in its construction and operation, and can be constructed at a comparatively low cost, and, further, that it comprises but a few parts, and these parts require no delicate adjustment. Further, the principle of operation is that of the steam gage, and the device has the same degree of accuracy in its operation as does the steam gage. Further, it will be apparent that the invention can be utilized to control the flow of gas to other devices than a steam generator. For example, it might be used with the automatic control of a water heater and, under these circumstances, water pressure would be used as the controlling medium instead of steam. Therefore, while I have shown and described one embodiment of the invention, and have shown the same as applied to a steam generator for controlling the flow of gas to the burner thereof, it will be understood that I do not wish to be limited either to the details of construction shown and described or to any particular use for the device, as various modifications and uses will occur to a person skilled in the art. It will, therefore, be understood that the words steam, and steam gen erator, as employed in the specification and claims, are not intended as words of limitation, but are intended to include analogous devices and fluids of various kinds.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device to control the flow of gas to a burner, a housing having gas inlet and outlet openings, means mounted on said housing and having an end extending therein, a seat swiveled upon said end, a tube within the housing flexibly connected with one of said openings, and pressure operated means for adjusting said tube toward and away from said seat.

2. In a device to control the flow of gas to a burner, a housing having gas inlet and outlet openings, a seat mounted within said housing, an angular tube flexibly connected with one of said openings, one portion of said tube being in axial alinement with said seat, and pressure operated means connected to said tube for moving the same toward and away from said seat.

3. In a device to control the flow of gas to a burner, a housing having gas inlet and outlet openings, a seat mounted within said housing, a flexible tube connected at one end to one of said openings, a rigid tube connected to the other end of said flexible tube and having one end in alinement with said seat, said tubes being located within the housing, and means connected to said rigid tube for automatically moving the same toward and away from said seat.

In testimony whereof, I afliX my signature in presence of two witnesses.

JOHN W. BARTON.

Witnesses:

VIRGIL R. JUDsoN, Gno. S. NASH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

